ovlach_frontend/src/lib.rs

use std::collections::HashMap;

use rocket::{*, fairing::AdHoc};
use rocket_dyn_templates::{Template, tera::Value};
use ::serde::Deserialize;

pub mod routes;

#[derive(Deserialize)]
#[serde(crate = "rocket::serde")]
pub struct PresentationConfig {
    static_route: String,
}


pub fn static_filter(
    value: &Value,
    args: &HashMap<String, rocket_dyn_templates::tera::Value>
) -> Result<Value, rocket_dyn_templates::tera::Error> {
    let host = args.get("static_host");
    return Ok(rocket_dyn_templates::tera::Value::String(format!("{}/{}", host.unwrap().as_str().unwrap(), value.as_str().unwrap()))); // TODO: fix-me here!
}

pub fn rocket_builder() -> Rocket<Build> {  
    let rocket =  rocket::build();
    //let figment = rocket.figment();
      // extract the entire config any `Deserialize` value
    //let config: PresentationConfig = figment.extract().expect("config");

    rocket.attach(
        Template::try_custom(|engines| {
            engines.tera.register_filter("static", static_filter);
            Ok(())
        })
    ).attach(
        AdHoc::config::<PresentationConfig>()
    ).mount("/", routes![
        routes::root::index
    ])
}